At the start it was amusing but these days I'm getting a little annoyed also by the "Wirelessly posted..." part that gets automatically tacked on, for me it serves no meaning whatsoever. Also if I quote a message that contains that text, it also gets into the quote and I have to delete it manually.
Until there's a workaround (which I hope will come sometime) as jackal mentioned, if I want to post something from my phone I go to the full site, but it's slower and the screen is rather cramped for input.